Dash switch



Pstented izeh. "i2, lgd.

weisse FREDERIK G. WHITTINGTON, OF EVANSTON, ILLINOIS. ASSIGNOR T0 STEWARTJAB- NER SFEEDOMETER CORPORATION, OF CHICAGOLILLINOIS,

A. CORPORATXON DF DASH sWI'rCH.

Application led September 5, 1922. Y Serial No. 586,079.

mounting upon an instrument hoard or the' like of' an automobile. it' consists in the, elements and features of construction shown and described as indicated'in the claims.

in the drawingsz-- Figure l is a. section through a diete] in strument hoard ot ',relatiieiy smell thick ness es shown, which is equipped with the device embodyingr this invention the seine being shown in side elevation. l Figure 2 1s e similar View showing `the seme device in side elevation mounted on a wooden instrunient hoard of Corresp0ndv ingiy greater thickness than the metal hoard shown in Figure l,

Figure 3 is a section et the line 3-3 on Figure i.

Fignre Li Figure l.

Figure 5 scale :it the line 5-5 on Figlie l.

Figure G is n detail section 'at the line 6 6 on Figure 5.

Figure 7 is s section at the line 7--7 on Figure 1 showing in plan View the middle one of the three insulating layers.

lin the drawings, l represents e metal in struinent or dash hoard upon which the switch embodying this invention lis mounted` l shows e Wooden instrument board with the sume switch device mounted thereon. he switch itsel'l comprises two opis zi section at the line -ll on posed and spaced apart contacts, 2, 2, which.

with their respectively ceo-operating' wireattechinent pieces, 3, 3, are secured to an insulating support, 4e, consisting of a layer oi fibre or like suitable material to the opposed sides of which the contacts, 2 and 3, secured hy rivets extending through seid insulating member, 4i. An additional insulating iayer, 5, below the layer, 4:, has ends notehed et 5a to accommodate the is e settion on, en enlarged riveted ends of the wire-attached pieces, 3; und nv third liayer, (3, serves further to insui-e insulation olE said wire-attachment pieces hy 'covering their ends which are lodgedY in the notches, 5. Through all three of `thc insulating` layers, t, 5 and there vis inserted a sleeve, 7, having et, e short i'listnincc lmcli from the inserted end a hexagonal flange, T, formed integrsliy with ,the sleeve for shipping` the insulating layers :ind affording;V means for holding the slee-ve against rotation in screwing on the nuts 'by which it. is clamped to the boerd as 'hereinafter described. At, the endiwhiehis inserted 4through the insulating layers the sleei'e may he given Ifour short slits, 7b, to facilitate 'clinching down the end of the sleeve onto theoutermost layer, 4f, to hold the assembly. tightly against the flange, 7a.

,This 'clinching has to be done after all the parte t the switch 'hereinafter desoribed are place, at which. Stege` access for clinchii'igg,` cannot he obtained except at the two opposed sides; and the slitting described defines two lugs, 7d, at opposite sides which will he accessible for clinching them d'own when the device is full assembled as Y l v shown ifi-.Figures i and 2. y

ln the sleeve ,there 4is mounted for rempi-ocation :i plunger, 9, having; et. its end which stands between the contat-is, 2, 2, e-

knoh or heath 9a, of insulating material which is encompassed at the end by s metal ring, 9", for making Contact with the een` tacts, 2', 2; at or hack ofc' the point, oi nearest approach ot these contacts, which ar mounted inclined towardfeach other es seen titi in Figures end, and have their ends relcxed outward iis/seen in seid figures et, 21 .so to form angles atthe point. ,of nearest approach with the refiexed ends conve'gring lor facilitating theentrence ofthe head between said flexed ends for spreading'- the contact-s, 2, 2, to admit the heed haelt of said angles.v The parts are. dimensioned so that when the knol), 9", is retracted Iagainst theend ot the sleeve, 7, the metal ring, 9", is in 'Contact with the Contact pieces, 2, Q, back l of their angles or points o' nearest approach and the circuit elosed; and when the plunger is thrust, in toward the sleeve until its shoulder, 9, encounters the .inner end of the hitter, the insulating heed` 9, of the plunger occupies s position hetween the 'angles or points et nearest en preach of the contacts, 2, 2, as shown 'in dotted line in Figure and the circuit is thereby open.

n For mounting this lei/'ice upon u thin metal plate u nut. l0, is run onto the `l'l'hen the :.levice is to he mounted upon u Wooden oi other cmreslionflingly thick hoord, as; in Figure 2, the nut, lo, is llispensed with. the unoher. 1l,-iS `:ipplietl outside the hoard on the nut l2. :unl suirl nut then clamps the hoard tightly against the integral hexagonal Piange T.

l. An electric switch for mounting on an instrument hourol'nncl the' like, comprising in combination with two contacts which are to be electricalh7 connected`r a reciprocable plunger` and means carried thereon for cenneet-ingy and disconnecting the contacts at the respective limits of the reciprocstion 'of the plunger; :in insulated rnount for the contacts; a sleeve upon which the said insulated mount is lixeolly mounted and in which the plunger is mounted for reoiprocation. Said sleeve. having; :i stop Shoulder for stoppin;Y it aiguillon the under or back side of the hoard incl being; extended 'from said stop Shoulder at the oppostesirle of the 1 ,rennen insulation from that ut which the contacte are mounted thereon. unil being lhreuiletl outwgirdly from Suhl stop shoulder For screwing through the hoard. the plunger he ing exlenrleil through the sleeve 'or manual ucc/ew. ut one end and for curi-ying :it the other end the coutnct-connecting-uml-disconheatingn means.

2. An electricul switch for mountingF ou un instrument hoard andthe like, conlpris inn` in comhinution with two contacts which are to he clcctricullv connected; n reciprocnhle plunge' :un mean` curricil thereon for connecting` :nul disconnecting the conL toets :it the respective limits of reciprocation of the plunger; im insulating mount 'for the contacts; u sleeve to which the contacts are rigifll;1 secured, said Sleeve having a stop Shouhler :it the side of the insulation. opposite Ylirorn thut ut which thc contacts `are mounted, and being extenflerl from Suifl Shoulder for insertion through the instrument hoard, the plunger being extended out through Saifl sleeve for manual access at the outer end und for carrying at the' other end the contact connecting and -disconnectingA means, and stops, on the Sleeve adjust-able' longitudinally theremC for engaging the instrument hoard between them.

ln testimonyY whereof. l have hereunto set my hand at Chicago, Illinois. this 3l (lay et August, i922.

FREDERIK G. W'HTTNGTON. 

